You could also have them run a pro forma for you on a property.  

Then the good deals are sustained and everyone who paid too much, spent too much on construction, over-leveraged, was too aggressive on their pro-formas, etc gets wiped out.

I am looking to form a relationship with a broker in the twin cities specializing in multifamily.

Using a local bank bought it using the equity form a sfh for the down payment.

I have pro forma statements on various short term rentals in those communities and others that I will be happy to send to you that will help you in making a decision. 

The following are my calculations from the Bigger Pockets Buy and Hold Calculator:Monthly Income: $1,400.00 Monthly Expenses: $1,204.93Monthly Cash Flow: $195.07 Pro Forma Cap Rate:  7.72% NOI  $9,268.00Total Cash Needed $26,750.00 Cash on Cash ROI  8.75%Purchase Cap Rate 10.90% Purchase Price: $85,000.00 Purchase Closing Costs: $2,500.00 Estimated Repair Costs: $20,000.00 Total Cost of Project: $107,500.00 After Repair Value $120,000.00 (conservative)Down Payment: $4,250.00 Loan Amount: $80,750.00 Loan Points: $0.00 Loan Fees: $0,00Amortized Over: 15 years Loan Interest Rate: 3.500% Monthly P&I: $577.27Do you think this is a good enough deal to purchase?

When I invest in single deals so you suggest I form a property LLC which I sell interests to investors. 

*Monthly Income: $2,680Monthly Expenses: $1,140Monthly Cashflow: $1,539.46Pro Forma Cap: 20.72%NOI: $23,833Total Cash Needed: $4,750Cash on Cash ROI: 388.92%Purchase Cap Rate: 25.09%Total Operating Expenses: $693.92Mortgage Expenses: $446.62Vacancy (5%): $134CapEx (10%): $268Repairs (10%): $268Property Taxes: $23.92P&I: $446.62I know the current rent needs to be verified with what the tenants are paying but it is fully occupied.

Sure, you can do a pro-forma calculation... but without somewhat solid numbers, you are really guessing!  

Also, realtors don't exist in the same form as they do in the US.